Spinal Cord

Spinal cord with anterior and posterior nerve roots from an anterior perspective.

The spinal cord carries signals between the brain and the rest of the body.

The spinal cord anatomy is organized into gray matter and white matter. They are distinguishable by the naked eye.

Gray matter mainly consists of nerve cell bodies, interneurons and unmyelinated axons.

It contains motor neurons that transmit impulses to muscles, and transfers sensory impulses for tine touch, proprioception and vibration from peripheral receptors to the brain.

White matter primarily consists of myelinated axon tracts. Its nerve fibers connect different areas of gray matter in the central nervous system.

White matter is named for its relatively pale appearance due to its large amount of myelin, which provides electrical insulation of axons and accelerates signal transmission.

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